Lamborghini has pulled the covers off the
new Sián Roadster, the topless version of the brand’s most powerful model ever.
Set to be produced in just 19 examples, the new limited-edition hypercar from
Sant’Agata is a car that you can’t buy as all of them are already spoken for.
Just like the coupe variant, the Sián
Roadster is powered by a naturally aspirated 6.5-liter V12 engine combined with
a 48-volt electric motor for a total output of 807 HP. 0-100 km/h comes
in less than 2.9 seconds while top speed is claimed to be over 2350
km/h.
Lamborghini says that certain design
elements of the new Sián Roadster are inspired by the Countach, including the
“Periscopio” line that culminates in the airstreamers behind the driver and
passenger, and the six hexagonal taillights.
The new Sián Roadster also features a pair
of aero wings on the rear, in addition to active cooling vanes made out of
patented temperature-sensitive materials that react to the heat from the
exhaust system, causing the vanes to rotate and cool the engine.
Lamborghini’s most powerful road-legal
model to date is also the first hybrid too, with the 33 HP electric motor
incorporated into the transmission and allowing the car to operate on EV power
alone in low-speed maneuvers such as reversing and parking.
The most innovative part of the first
hybrid Lamborghini however is the supercapacitor, which is three times more
powerful than a lithium-ion battery of the same size, as well as three times
lighter than a battery of the same power. Lamborghini says that the electric
system with the supercapacitor and the electric motor weighs just 34 kg, giving the new Sián Roadster a weight-to-power ratio of 2.0 kg/hp.
One other advantage of the supercapacitor
over normal lithium-ion batteries is that it can be charged and discharged with
the same power, enabling the Sián Roadster to fully charge every time the
vehicle brakes. The stored energy is then available as an instant power boost
at speeds of up to 130 km/h, making it more than 10 percent faster
than a car without this system. In addition, the hybrid system also makes the
Sián Roadster more comfortable to drive, eliminating any jerking movements
during gear changes thanks to the system’s torque fill function.
Every example of the new Lamborghini Sián
Roadster will be built to their owners’ exact specification via the company’s
Ad Personam customization department, with the company offering an endless
range of colors and finishes, and even the option to have their initials
inscribed on the air vents via 3D-printing.
